﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Basic Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234237

namespace Windows8AppsExample
{
    /// <summary>
    /// A basic page that provides characteristics common to most applications.
    /// </summary>
    public sealed partial class GradientBrush : Windows8AppsExample.Common.LayoutAwarePage
    {
        public GradientBrush()
        {
            this.InitializeComponent();
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            // Create the foreground brush for the TextBlock     
            LinearGradientBrush foregroundBrush = new LinearGradientBrush();
            foregroundBrush.StartPoint = new Point(0, 0);
            foregroundBrush.EndPoint = new Point(1, 0);
            GradientStop gradientStop = new GradientStop();
            gradientStop.Offset = 0; gradientStop.Color = Colors.Blue;
            foregroundBrush.GradientStops.Add(gradientStop);
            gradientStop = new GradientStop();
            gradientStop.Offset = 1;
            gradientStop.Color = Colors.Red;
            foregroundBrush.GradientStops.Add(gradientStop);
            txtblk.Foreground = foregroundBrush;
            // Create the background brush for the Grid     
            LinearGradientBrush backgroundBrush = new LinearGradientBrush
            {
                StartPoint = new Point(0, 0),
                EndPoint = new Point(1, 0)
            };
            backgroundBrush.GradientStops.Add(new GradientStop
            {
                Offset = 0,
                Color = Colors.Red
            });
            backgroundBrush.GradientStops.Add(new GradientStop
            {
                Offset = 1,
                Color = Colors.Blue
            });
            contentGrid.Background = backgroundBrush;
        }

        /// <summary>
        /// Preserves state associated with this page in case the application is suspended or the
        /// page is discarded from the navigation cache.  Values must conform to the serialization
        /// requirements of <see cref="SuspensionManager.SessionState"/>.
        /// </summary>
        /// <param name="pageState">An empty dictionary to be populated with serializable state.</param>
        protected override void SaveState(Dictionary<String, Object> pageState)
        {
        }
    }
}
